<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        
    </style>
</head>
<body>
    
</body>
<script>
    

    function sayHello(){
        console.log("hello world");
    }

    function ninenine(){
        for(var i=1;i<=9;i++){
            for(var j=1;j<=i;j++){
                document.write( j + "*" + i + "=" + i*j + "&nbsp;");
            }
            document.write("<br>");
        }
    }


    // 壳
    // 装什么？


</script>
</html>